KR102024971B1 - 반도체 디바이스 및 그 제조 방법 - Google Patents
반도체 디바이스 및 그 제조 방법 Download PDFInfo
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- KR102024971B1 KR102024971B1 KR1020150168006A KR20150168006A KR102024971B1 KR 102024971 B1 KR102024971 B1 KR 102024971B1 KR 1020150168006 A KR1020150168006 A KR 1020150168006A KR 20150168006 A KR20150168006 A KR 20150168006A KR 102024971 B1 KR102024971 B1 KR 102024971B1
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Abstract
Description
도 1은 몇몇 실시예에 따라 구성되는 반도체 디바이스를 제조하는 예시적인 방법의 흐름도이다.
도 2a, 3a, 4a, 4c, 5a, 6a, 6c 및 7a는 몇몇 실시예에 따른 예시적인 반도체 디바이스의 평면도이다.
도 2b는 도 2a의 선 A-A를 따른, 몇몇 실시예에 따른 예시적인 반도체 디바이스의 단면도이다.
도 3b는 도 3a의 선 B-B를 따른, 몇몇 실시예에 따른 예시적인 반도체 디바이스의 단면도이다.
도 4b는 도 4a의 선 B-B를 따른, 몇몇 실시예에 따른 예시적인 반도체 디바이스의 단면도이다.
도 4d는 도 4c의 선 B-B를 따른, 몇몇 실시예에 따른 예시적인 반도체 디바이스의 단면도이다.
도 5b는 도 5a의 선 A-A를 따른, 몇몇 실시예에 따른 예시적인 반도체 디바이스의 단면도이다.
도 6b는 도 6a의 선 A-A를 따른, 몇몇 실시예에 따른 예시적인 반도체 디바이스의 단면도이다.
도 6d는 도 6c의 선 A-A를 따른, 몇몇 실시예에 따른 예시적인 반도체 디바이스의 단면도이다.
도 7b 및 도 7c는 도 7a의 선 A-A를 따른, 몇몇 실시예에 따른 예시적인 반도체 디바이스의 단면도이다.
Claims (10)
- 기판 위에 제1 유전체층을 형성하는 단계;
상기 제1 유전체층 내에 제1 트렌치를 형성하는 단계;
상기 제1 트렌치 내에 금속 라인을 형성하는 단계;
상기 금속 라인 위에 하드 마스크를 형성하는 단계로서, 상기 하드 마스크는 상기 금속 라인의 제1 부분 및 제2 부분을 각각 노출시키는 제1 개구 및 제2 개구를 포함하고, 상기 제1 유전체층의 제1 부분이 상기 제1 개구 내에서 노출되는, 상기 하드 마스크를 형성하는 단계;
상기 금속 라인의 상기 제1 부분을 제거하여 제2 트렌치를 형성하고 상기 금속의 상기 제2 부분을 제거하여 제3 트렌치를 형성하는 단계로서, 상기 제2 트렌치와 상기 제3 트렌치 사이에 상기 금속 라인의 제3 부분이 배치되는 것인 단계; 및
상기 제2 트렌치와 상기 제3 트렌치 내에 제2 유전체층을 형성하는 단계
를 포함하는 방법. - 제1항에 있어서,
상기 금속 라인의 상기 제3 부분은 상기 제1 트렌치와 상기 제2 트렌치에 의해 정의되는 상부 폭 및 하부 폭을 갖는 것인 방법. - 제1항에 있어서,
상기 제2 트렌치 및 상기 제3 트렌치를 형성하는 것은, 상기 제2 트렌치의 제1 측벽 및 제2 측벽과 상기 제3 트렌치의 제3 측벽 및 제4 측벽을 형성하기 위해 상기 금속 라인의 제1 부분 및 제2 부분을 제거하는 것을 포함하고,
상기 제2 트렌치의 상부 폭 및 하부 폭은 상기 제1 및 제2 측벽들에 의해 정의되며, 상기 제3 트렌치의 상부 폭 및 하부 폭은 상기 제3 및 제4 측벽들에 의해 정의되고, 상기 상부 폭들은 상기 하부 폭들보다 큰 것인 방법. - 제1항에 있어서,
상기 금속 라인의 상기 제1 부분을 제거하여 제2 트렌치를 형성하고 상기 금속 라인의 상기 제2 부분을 제거하여 제3 트렌치를 형성하는 단계는,
상기 제1 개구 및 상기 제2 개구 각각을 통해 상기 금속 라인의 상기 노출된 제1 부분 및 제2 부분을 에칭하는 단계; 및
상기 하드 마스크를 제거하는 단계
를 포함하는 것인 방법. - 제1항에 있어서,
상기 제2 트렌치 및 제3 트렌치를 형성하는 것은, 상기 금속 라인의 2개의 노출된 부분을 제거하는 동안 상기 제1 유전체층을 서브 에칭 마스크로서 사용하는 것을 포함하는 것인 방법. - 제1항에 있어서,
상기 제2 트렌치와 상기 제3 트렌치 내에 제2 유전체층을 형성하는 단계는 제2 유전체 재료층 내에 공극을 형성하는 단계를 포함하는 것인 방법. - 기판 위의 제1 유전체층에 제1 트렌치를 형성하는 단계;
상기 제1 트렌치 내에 금속 라인을 형성하는 단계;
상기 금속 라인 상에 패터닝된 하드 마스크층을 형성하는 단계로서, 상기 패터닝된 하드 마스크층은 상기 금속 라인의 제1 부분 및 제2 부분을 각각 노출시키기 위한 제1 개구 및 제2 개구를 포함하고, 상기 제1 유전체층의 제1 부분은 상기 제1 개구 내에서 노출되는 것인, 상기 패터닝된 하드 마스크층을 형성하는 단계;
금속 아일랜드 특징부(metal island feature)를 형성하기 위해 상기 금속 라인의 상기 제1 부분 및 상기 제2 부분을 에칭하는 단계; 및
상기 제1 개구 및 상기 제2 개구 내에 제2 유전체층을 형성하는 단계
를 포함하는 방법. - 디바이스에 있어서,
기판 위에 배치된 제1 유전체층 내의 제1 방향을 따르는 제1 트렌치에 형성된 금속 라인을 포함하고,
상기 금속 라인은,
제1 서브 금속 라인; 및
상기 제1 서브 금속 라인에 정렬되고 상기 제1 방향을 따르는 제2 서브 금속 라인
을 포함하고,
상기 제1 서브 금속 라인 및 상기 제2 서브 금속 라인의 상부 표면들은 상기 제1 유전체층의 상부 표면과 동일 평면 상에 있고, 상기 제2 서브 금속 라인은 제2 유전체층으로 충진되는 제2 트렌치에 의해 상기 제1 서브 금속 라인과 분리되며, 상기 제2 유전체층은 상기 제1 유전체층, 상기 제1 서브 금속 라인 및 상기 제2 서브 금속 라인을 덮고, 상기 제1 방향을 따르는 상기 제2 서브 금속 라인의 측벽들은 테이퍼형 측벽 프로파일을 갖고, 상기 제1 방향을 따르는 상기 제2 서브 금속 라인의 바닥측은 상기 제2 서브 금속 라인의 상부측보다 넓은 것인, 디바이스. - 제8항에 있어서,
상기 제2 서브 금속 라인을 향해 있는 상기 제1 서브 금속 라인의 측벽은 테이퍼형 측벽 프로파일을 갖고, 상기 제1 방향을 따르는 상기 제1 서브 금속 라인의 바닥측은 상기 제1 서브 금속 라인의 상부측보다 넓은 것인, 디바이스. - 제8항에 있어서,
상기 금속 라인은 상기 제1 서브 금속 라인에 정렬되고 상기 제1 방향을 따르는 제3 서브 금속 라인을 더 포함하고,
상기 제3 서브 금속 라인은 상기 제2 서브 금속 라인의 다른 측에 위치되고, 상기 제3 서브 금속 라인은 상기 제2 유전체층으로 충진되는 제3 트렌치에 의해 분리되며, 상기 제2 서브 금속 라인을 향해 있는 상기 제3 서브 금속 라인의 측벽은 테이퍼형 측벽 프로파일을 갖고, 상기 제1 방향을 따르는 상기 제3 서브 금속 라인의 바닥측은 상기 제3 서브 금속 라인의 상부측보다 넓은 것인, 디바이스.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/803,671 US9589890B2 (en) | 2015-07-20 | 2015-07-20 | Method for interconnect scheme |
| US14/803,671 | 2015-07-20 |
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| KR20170010710A KR20170010710A (ko) | 2017-02-01 |
| KR102024971B1 true KR102024971B1 (ko) | 2019-09-24 |
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| KR (1) | KR102024971B1 (ko) |
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| US9659874B2 (en) * | 2015-10-14 | 2017-05-23 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method of forming deep trench and deep trench isolation structure |
| US9859208B1 (en) * | 2016-09-18 | 2018-01-02 | International Business Machines Corporation | Bottom self-aligned via |
| US10522394B2 (en) * | 2017-09-25 | 2019-12-31 | Marvell World Trade Ltd. | Method of creating aligned vias in ultra-high density integrated circuits |
| US11152261B2 (en) * | 2019-10-26 | 2021-10-19 | International Business Machines Corporation | Self-aligned top via formation at line ends |
| US11862559B2 (en) * | 2020-07-31 | 2024-01-02 | Taiwan Semiconductor Manufacturing Co., Ltd. | Semiconductor structures and methods of forming the same |
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- 2015-11-25 TW TW104139087A patent/TWI600118B/zh active
- 2015-11-27 KR KR1020150168006A patent/KR102024971B1/ko active Active
- 2015-11-30 CN CN201510853081.4A patent/CN106373921A/zh active Pending
- 2015-11-30 CN CN202110618776.XA patent/CN113314461B/zh active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| US20170025346A1 (en) | 2017-01-26 |
| TWI600118B (zh) | 2017-09-21 |
| KR20170010710A (ko) | 2017-02-01 |
| TW201705363A (zh) | 2017-02-01 |
| CN106373921A (zh) | 2017-02-01 |
| CN113314461A (zh) | 2021-08-27 |
| CN113314461B (zh) | 2024-11-01 |
| US9589890B2 (en) | 2017-03-07 |
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